HowtoMatrix

This tutorial explains how to set up PHPIDS
on a web server with Apache2 and PHP5. PHPIDS (PHP-Intrusion Detection
System) is a simple to use, well structured, fast and state-of-the-art
security layer for your PHP based web application. The IDS neither
strips, sanitizes nor filters any malicious input, it simply recognizes
when an attacker tries to break your site and reacts in exactly the way
you want it to. Based on a set of approved and heavily tested filter
rules any attack is given a numerical impact rating which makes it easy
to decide what kind of action should follow the hacking attempt. This
could range from simple logging to sending out an emergency mail to the
development team, displaying a warning message for the attacker or even
ending the user’s session.

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